We use cookies to give you the best experience on our website. If you continue to browse, then you agree to our privacy policy and cookie policy. Image for the cookie policy date
Unfortunately, activation email could not send to your email. Please try again.
Syncfusion Feedback

How to validate the AddNewRow value based on existing records in WPF DataGrid (SfDataGrid)?

Platform: WPF |
Control: SfDataGrid |
.NET Framework: 4.5

You can validate the newly adding row value based on the existing records by using CurrentCellValidating event in WPF DataGrid (SfDataGrid).

C# 

this.sfGrid.CurrentCellValidating += sfGrid_CurrentCellValidating;
void sfGrid_CurrentCellValidating(object sender, Syncfusion.UI.Xaml.Grid.CurrentCellValidatingEventArgs args)
{
   bool isAddNewRow = sfGrid.IsAddNewIndex(sfGrid.SelectionController.CurrentCellManager.CurrentRowColumnIndex.RowIndex);
 
   if (!isAddNewRow)
      return;
 
   if (args.Column.MappingName == "Name")
   {
      var text = args.NewValue.ToString();
      var datacontext = (this.DataContext as UserInfoViewModel).UserDetails;
      var listOfNames = datacontext.Where(e => e.Name.Equals(text)).ToList();
      if (listOfNames.Count > 0)
      {
         args.ErrorMessage = "Entered Name is  already existing";
         args.IsValid = false;
      }
   }
}

You can also use RowValidating event to validate the row when the cell is edited. The RowValidating event occurs when the edited cells try to commit the row data or lose the focus.

Validate the new row based on existing records in WPF DataGrid

View sample in GitHub.

2X faster development

The ultimate WPF UI toolkit to boost your development speed.
ADD COMMENT
You must log in to leave a comment

Please sign in to access our KB

This page will automatically be redirected to the sign-in page in 10 seconds.

Up arrow icon

Warning Icon You are using an outdated version of Internet Explorer that may not display all features of this and other websites. Upgrade to Internet Explorer 8 or newer for a better experience.Close Icon

Live Chat Icon For mobile